Paris/Tokyo, December 5, 2005 â€” Thomson (Euronext Paris: 18453; NYSE: TMS) today announced that it has signed an agreement to acquire 33 1/3% of the issued and outstanding shares of Canopus Co., Ltd, a Japan-based leader in high-definition desktop video editing software, through a private transaction with Chairman and CEO, Hiroshi Yamada, and members of his immediate family. Thomson also disclosed today that it will launch a public tender offer for the remaining Canopus shares on Tuesday, December 6, 2005.